ADS1115 I2C 16Bit 4-channel ADC Module with Programmable Gain Amplifier

ADS1115 I2C 16-Bit 4-channel ADC Module is a versatile and high-precision analog-to-digital converter designed to give your microcontroller the ability to read analog signals with incredible accuracy. This module stands out with its 16-bit resolution, providing 65,536 steps of measurement, far surpassing the typical 10-bit resolution found on many microcontrollers. Its integrated Programmable Gain Amplifier (PGA) allows you to amplify small analog signals before conversion, ensuring you capture even the most subtle changes with precision. Engineers and hobbyists use it in projects where high-resolution data is critical, such as battery monitoring, precision temperature sensing, and data logging.

Key Features:

• High-Resolution 16-Bit ADC: Delivers exceptional measurement precision with 65,536 steps of resolution.
• Four-Channel Input: Connect up to four single-ended analog sensors or two differential input pairs.
• Programmable Gain Amplifier (PGA): Adjusts the input range from ±256 mV to ±6.144 V to accurately measure signals of varying strengths.
• I²C Interface: Communicates easily with any microcontroller using a two-wire serial protocol, simplifying wiring.
• Wide Operating Voltage: Functions reliably on power supplies from 2.0 V to 5.5 V.
• Low Current Consumption: Operates efficiently, making it ideal for low-power and battery-powered applications.

Technical Specifications:

• Operating Voltage: 2.0 V to 5.5 V
• ADC Resolution: 16 bits
• Input Channels: 4 single-ended or 2 differential
• Interface: I²C (with 4 address options)
• Programmable Data Rate: 8 to 860 samples per second (SPS)
• Operating Temperature: -40 °C to +125 °C

Mechanical Specifications:

• Module Type: Breakout PCB with soldered ADS1115 IC and passive components.
• Connector: 6 pin header for through-hole or jumper wire connections.
• Assembly: Designed for easy integration with breadboards and prototyping.
• Material: FR4 PCB with clear silkscreen labeling.

Dimensions:

• Board Length: ~25 mm
• Board Width: ~15 mm
• Board Thickness: ~1.6 mm
• Pin Pitch: Standard 2.54 mm for breadboard compatibility.

Pinout and Wiring:

• VDD: Power supply (2.0 V to 5.5 V)
• GND: Ground
• SCL: I²C Clock line
• SDA: I²C Data line
• ADDR: I²C Address Select pin (connect to VDD, GND, SDA, or SCL to set one of four unique addresses)
• A0, A1, A2, A3: Analog input channels
• Wiring Note: Connect VDD and GND to your power source, and SCL/SDA to the corresponding I²C pins on your microcontroller. Use the ADDR pin to select the device address if you have multiple I²C devices.

Datasheet Reference:

• Download the official Texas Instruments ADS1115 datasheet for complete details, register maps, and application circuits.

Applications:

• Precision Sensor Readings: Accurately measure data from strain gauges, thermocouples, and pressure sensors.
• Battery Monitoring: Get a precise reading of battery voltage for portable devices.
• Data Logging: Capture high-resolution analog data over time for scientific or industrial projects.
• Medical Instruments: Develop compact, high-precision measurement devices.

Equivalent Models:

• ADS1015: A similar ADC module with 12-bit resolution, offering a balance between speed and precision.
• MCP3008: A 10-bit ADC that uses the SPI protocol, suitable for less precise applications.

Package Includes:

• 1 x ADS1115 I2C 16-Bit 4-channel ADC Module